The comunity of SD2SNES users became ultra-excited since yesterday, because a man called Redguy came from nowhere and released a beta implementation for the Super FX chip, and now it's possible to play roms that require that chip.

My question is: could be possible to make such kind of implementation to run SVP games (a.k.a. Virtua Racing) on the Mega Everdrive (at least on X7)? Could X7's hardware handle this kind of implementation through firmware update like the SD2SNES?

I'm glad to know that this became a reality two days ago, and almost 2 years after starting this topic and dreaming with it.Also, I was fortunate to get myself a 32X unit in the meantime, so now I can play both Genesis and 32X versions of Virtua Racing. (It's important to notice that the Genesis version won't run if the 32X unit is attached, but it works like a charm in the Genesis directly)

If you're playing on a Super NT and have the real cartridge version of the game you want to play I believe the jailbreak firmware has an option that allows you to dump your own authentic cartridge's rom to SD card.

From there you could then try things out with absolute certainty you have a clean viable rom.

Alternatively if you are playing on a Super NT you may need to check your settings and make sure you have the NTSC or PAL region checked as in make sure the box is checked of your corresponding rom's country which as you basically pointed out in your case would be NTSC.

I'm using a real SNES.A Super NT wouldn't work anyway, since it only has HDMI output for modern TVs, and lightguns only work on CRTs.

Usually they're perfect, but it's something else to rule out by trying another set that includes the problematic games, if you can find one.

It could even be your power supply considering your original carts and SS work without issue. SD2SNES draws a little more power than any retail cart and your PSU could be struggling to power both the cart, and the SS. Again, just something to rule out.

I'm not sure if it's the power supply, but I will look for another one for testing. I use other periferals with the SD2SNES, such as the Super Multitap, without any issues.

I was going to suggest using another cable, but you said your retail cart(s) work fine. It could be a bad ROM dump.

Yes, the original carts just work as intended with the same cable.Also, I believe the roms are good dumps, they're from SmokeMonster's pack, and the source is the No-Intro set. I don't think those roms are bad dumps.